I have a 1949 Chevrolet Modded with and open engine, I am running a 160 thermostat and electric fan. I am running at between 180 and 200 most of the time, is this normal? My question is what is too hot? I've read several threads on here about the correct temps you should run. Just curious as to what other open car engines run in the summer times. I don't want to be out running around and run hot. I'm thinking about going up to a 180 to keep the water in the radiator longer for a better cool down. thoughts?